# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 42.558450 km # Date (UTC) = 2011-01-31T04:18:22.793 # Date (julian) = 2455592.67943047 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6503.1511 1.3107590e+11 0.063451250 0.033233421 170.95901 63.213366 6505.6291 1.0435123e+11 0.074149150 0.033980662 171.39836 62.974874 6508.1072 8.4635680e+10 0.085013596 0.034727904 171.74845 62.788162 6510.5852 7.0323466e+10 0.096134011 0.035475146 172.15271 62.564301 6513.0632 5.9163362e+10 0.10755975 0.036222387 172.57079 62.323491 6515.5412 4.9809452e+10 0.11927255 0.036969629 172.92713 62.116314 6518.0193 4.2390761e+10 0.13139869 0.037716871 173.29072 61.904213 6520.4973 3.6624751e+10 0.14404394 0.038464113 173.68938 61.666720 6522.9753 3.1732854e+10 0.15444667 0.039172648 174.05339 61.442878 6525.4533 2.7483133e+10 0.16056055 0.039730476 174.37214 61.242991 6527.9314 2.4247407e+10 0.16602904 0.041392652 174.74505 61.003302 6530.4094 2.1377052e+10 0.17041199 0.044401831 175.04846 60.801029 6532.8874 1.8843506e+10 0.17419663 0.047425531 175.40451 60.566246 6535.3654 1.6858552e+10 0.17574269 0.048065772 175.71124 60.360517 6537.8435 1.5055270e+10 0.17703889 0.049082879 175.99908 60.162268 6540.3215 1.3769516e+10 0.17756591 0.051005980 176.28538 59.959998 6542.7995 1.2523540e+10 0.17583754 0.051305776 176.56545 59.757728 6545.2775 1.1275552e+10 0.17344182 0.052458053 176.90932 59.518247 6547.7556 1.0108010e+10 0.17006891 0.053574689 177.19065 59.311236 6550.2336 9.0178881e+09 0.16673470 0.055043846 177.45828 59.108965 6552.7116 8.1817363e+09 0.16341595 0.055407656 177.72276 58.906710 6555.1896 7.4792956e+09 0.16043279 0.054694029 177.98700 58.704484 6557.6677 6.7814914e+09 0.15736498 0.053447619 178.24372 58.502215 6560.1457 6.1111069e+09 0.15417653 0.052142960 178.54080 58.262475 6562.6237 5.5055589e+09 0.15075576 0.050286426 178.80757 58.045723 6565.1017 4.9912690e+09 0.14782434 0.048202883 179.05652 57.843452 6567.5798 4.5963901e+09 0.14513367 0.046126991 179.30436 57.640072 6570.0578 4.2588121e+09 0.14302121 0.044893575 179.54553 57.430024 6572.5358 3.9274593e+09 0.14059724 0.043923316 179.77999 57.226683 6575.0138 3.6102588e+09 0.13799530 0.042360835 19.996414 57.024432 6577.4919 3.3488420e+09 0.13477347 0.039447793 -179.76439 56.829950 6579.9699 3.1393307e+09 0.13138322 0.036537314 -179.56991 56.654915 6582.4479 2.9612406e+09 0.12801619 0.035171909 -179.35232 56.459668 6584.9259 2.7821250e+09 0.12488540 0.034011125 -179.12674 56.253864 6587.4039 2.5823411e+09 0.12178596 0.033247869 -178.90248 56.043816 6589.8820 2.3792896e+09 0.11863641 0.031296223 -178.68465 55.833764 6592.3600 2.1857666e+09 0.11487550 0.027723859 -178.47371 55.630612 6594.8380 1.9959863e+09 0.11125830 0.025712489 -178.25901 55.423692 6597.3160 1.8407709e+09 0.10727518 0.025622995 -178.05473 55.224732 6599.7941 1.7176651e+09 0.10460889 0.024977489 -177.87969 55.049696 6602.2721 1.6104418e+09 0.10274078 0.027284438 -177.68360 54.853603 6604.7501 1.5047554e+09 0.10076127 0.026516673 -177.48134 54.647538 6607.2281 1.3929449e+09 0.099174768 0.025256496 -177.28590 54.444582 6609.7062 1.2993582e+09 0.096029971 0.023915697 -177.11737 54.269581 6612.1842 1.2170158e+09 0.093745386 0.024183129 -176.93172 54.071464 6614.6622 1.1350009e+09 0.092950774 0.023484250 -176.73723 53.861413 6617.1402 1.0533897e+09 0.091845742 0.023485746 -176.54619 53.654470 6619.6183 9.7626506e+08 0.091524936 0.024675092 -176.39061 53.479437 6622.0963 9.0883687e+08 0.090591064 0.024732363 -176.21381 53.285306 6624.5743 8.5704800e+08 0.088935505 0.025169738 -176.03117 53.084412 6627.0523 8.0639008e+08 0.087006681 0.025337028 -175.88206 52.909377 6629.5304 7.5567565e+08 0.085959960 0.026013213 -175.70596 52.709204 6632.0084 7.0904967e+08 0.084175562 0.026033351 -175.53552 52.514298 6634.4864 6.6222376e+08 0.082710720 0.026362324 -175.38641 52.339263 6636.9644 6.2083113e+08 0.081130973 0.026175222 -175.21080 52.133111 6639.4425 5.8480190e+08 0.080323605 0.025469929 -175.05382 51.944237 6641.9205 5.4722109e+08 0.080714334 0.025151426 -174.90944 51.766560 6644.3985 5.0894025e+08 0.079603820 0.025386677 -174.73829 51.548731 6646.8765 4.7544658e+08 0.078312133 0.026373870 -174.58928 51.364123 6649.3546 4.4309723e+08 0.077030557 0.027144944 -174.44000 51.180915 6651.8326 4.1299517e+08 0.076443194 0.027122221 -174.26889 50.970915 6654.3106 3.8880899e+08 0.075394558 0.027903903 -174.13094 50.794063 6656.7886 3.6249112e+08 0.073195099 0.028715596 -173.98376 50.604830 6659.2667 3.4148002e+08 0.071428187 0.031778974 -173.82443 50.398205 6661.7447 3.2106219e+08 0.070022522 0.032914232 -173.69478 50.216689 6664.2227 3.0541744e+08 0.068875721 0.031391215 -173.56138 50.038914 6666.7007 2.8906123e+08 0.069097049 0.027045141 -173.42455 49.862655 6669.1788 2.6818603e+08 0.068217749 0.028172109 -173.26900 49.652655 6671.6568 2.5162550e+08 0.068540424 0.026874708 -173.13285 49.468855 6674.1348 2.3517203e+08 0.067928864 0.029068507 -173.00454 49.292481 6676.6128 2.2377245e+08 0.065659147 0.032108688 -172.88136 49.110962 6679.0909 2.1322898e+08 0.065030900 0.030192695 -172.73666 48.910494 6681.5689 2.0250997e+08 0.066393686 0.030093792 -172.59336 48.713719 6684.0469 1.9321395e+08 0.066905719 0.032656472 -172.47021 48.538718 6686.5249 1.8678410e+08 0.065960815 0.034066494 -172.35246 48.358270 6689.0030 1.7924168e+08 0.062890729 0.034013368 -172.22664 48.168382 6691.4810 1.7222141e+08 0.062009849 0.032887784 -172.07908 47.958610 6693.9590 1.6732837e+08 0.060979665 0.031275093 -171.96238 47.783575 6696.4370 1.6096108e+08 0.060869132 0.029857360 -171.84569 47.605523 6698.9150 1.5564554e+08 0.059636809 0.031473826 -171.72901 47.424006 6701.3931 1.4920873e+08 0.057741434 0.031986195 -171.61231 47.248471 6703.8711 1.3773827e+08 0.057900203 0.035854997 -171.48676 47.057182 6706.3491 1.2849882e+08 0.057987468 0.039054023 -171.34958 46.843448 6708.8271 1.1844333e+08 0.057541839 0.040944311 -171.23937 46.668413 6711.3052 1.1216921e+08 0.055692247 0.041039433 -171.12917 46.493377 6713.7832 1.0848133e+08 0.053377911 0.046519271 -171.01896 46.318279 6716.2612 99181304. 0.051588858 0.048786112 -170.90875 46.136762 6718.7392 90844902. 0.049275008 0.050963730 -170.78826 45.941946 6721.2173 82109308. 0.049753570 0.050369363 -170.66002 45.737107 6723.6953 72485388. 0.048440844 0.049756720 -170.54982 45.555591 6726.1733 65221912. 0.044608456 0.040952931 -170.44375 45.378214 6728.6513 57147619. 0.044365917 0.040551264 -170.34004 45.203179 6731.1294 55359717. 0.042752736 0.042007487 -170.23631 45.028144 6733.6074 55288897. 0.041615042 0.047222006 -170.12110 44.829417 6736.0854 55114753. 0.043324248 0.050677921 -170.00219 44.623070 6738.5634 55597979. 0.044802492 0.060423083 -169.89848 44.448073 6741.0415 50812366. 0.044455820 0.065876947 -169.79477 44.273048 6743.5195 49409412. 0.040034465 0.074551892 -169.69223 44.096828 6745.9975 44669144. 0.038454534 0.078986232 -169.59499 43.915309 6748.4755 46121803. 0.033705147 0.069518715 -169.48529 43.715526 6753.4316 48482756. 0.026792719 0.074373980 -169.27825 43.334081